12056985 has 64 divisors (see below), whose sum is σ = 22978560. Its totient is φ = 5987520.

The previous prime is 12056981. The next prime is 12057013. The reversal of 12056985 is 58965021.

It is a happy number.

12056985 is a `hidden beast` number, since 12 + 0 + 569 + 85 = 666.

It is not a de Polignac number, because 12056985 - 2² = 12056981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12056981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 179922 + ... + 179988.

It is an arithmetic number, because the mean of its divisors is an integer number (359040).

Almost surely, 2^12056985 is an apocalyptic number.

12056985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12056985 is a deficient number, since it is larger than the sum of its proper divisors (10921575).

12056985 is a wasteful number, since it uses less digits than its factorization.

12056985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 12056985 is about 3472.3169498190. The cubic root of 12056985 is about 229.3046738249.

It can be divided in two parts, 12056 and 985, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 12056985 in words is "twelve million, fifty-six thousand, nine hundred eighty-five".